JP2018034397A - Manufacturing method of liquid injection device and liquid injection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method of a liquid injection device which inhibits increase of the number of adjustment steps related to injection of the liquid injection device or enables downsizing, and to provide the liquid injection device.SOLUTION: A liquid injection device includes: a container holding member to which a first liquid container and a second liquid container are detachably attached; an injection mechanism which injects liquids supplied from each liquid container from nozzles; and an adjustment member. The adjustment member is disposed at a position where the adjustment member is covered by the first liquid container, yet is not covered by the second liquid container. A manufacturing method of the liquid injection device includes: an injection step where the liquid is injected by the injection mechanism in a state where the first liquid container is not attached and the second liquid container is attached; and an adjustment step where adjustment of the liquid injection device is performed by the adjustment member on the basis of an injection result in the injection step.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a method of manufacturing a liquid ejecting apparatus such as an ink jet recording apparatus, and a liquid ejecting apparatus, and in particular, a container holding member to which a liquid container is detachably mounted, and a liquid supplied from the liquid container from a nozzle. The present invention relates to a method for manufacturing a liquid ejecting apparatus including an ejecting mechanism for ejecting and an adjustment member that performs adjustment related to ejection of the ejecting mechanism, and a liquid ejecting apparatus.

  As a liquid ejecting head that ejects (discharges) droplets from a nozzle by causing pressure fluctuation in the liquid in the pressure chamber, for example, ink jet recording used in an image recording apparatus such as an ink jet recording apparatus (hereinafter simply referred to as a printer). Electrode material injection used to form electrodes for heads (hereinafter simply referred to as recording heads), color material injection heads used in the manufacture of color filters such as liquid crystal displays, organic EL (Electro Luminescence) displays, FEDs (surface emitting displays), etc. There are a bio-organic matter ejecting head used for manufacturing a head and a biochip (biochemical element). The recording head for the image recording apparatus ejects liquid ink, and the color material ejecting head for the display manufacturing apparatus ejects solutions of R (Red), G (Green), and B (Blue) color materials. The electrode material ejecting head for the electrode forming apparatus ejects a liquid electrode material, and the bioorganic matter ejecting head for the chip manufacturing apparatus ejects a bioorganic solution.

  As the liquid ejecting apparatus, for example, there is a configuration in which an ejecting mechanism for ejecting liquid is fixed to a holding member called a carriage, and liquid is ejected from a nozzle of the ejecting mechanism to a liquid landing target such as a recording medium. (For example, refer to Patent Document 1). The carriage has an adjustment member such as a cam for adjusting the position of the ejection mechanism and the flow path member that supplies the liquid from the liquid container to the ejection mechanism. The adjustment member allows the ejection mechanism and the flow path member of the carriage to be adjusted. The position is adjusted (alignment adjustment), and the injection mechanism and the flow path member are fixed to the carriage by a fastening member such as a screw.

  In this type of liquid ejecting apparatus, a liquid container storing liquid to be supplied to the ejecting mechanism through a flow path member is detachably mounted on the carriage. For example, in the configuration disclosed in Patent Document 1, a liquid container is disposed immediately above an ejection mechanism (recording head unit) fixed to a carriage. In the alignment adjustment described above, an inspection pattern (alignment pattern) is formed by introducing the liquid from the liquid container into the flow path of the ejection mechanism and ejecting the liquid onto the liquid landing target. Adjustment is performed based on the pattern, and the injection mechanism is fixed to the carriage by a fastening member after alignment adjustment. For this reason, the adjusting member and the fastening member described above are arranged at positions that are not covered with the liquid container in the carriage.

JP 2012-040743 A

  However, in the configuration in which the adjustment member and the fastening member are arranged at positions that are not covered by the liquid container, there is a problem that the size of the carriage and the ejection mechanism is increased accordingly. That is, in order to provide a portion to be fixed by the adjustment member and a region for adjusting the adjustment member (a region necessary for the operation of the adjustment member) up to the position, a space for the carriage or the like is required. . Further, in the configuration in which the number of steps for attaching and detaching the liquid storage member is increased, not only the entire manufacturing process is lengthened, but also the position of the ejection mechanism is shifted due to the attachment and detachment of the liquid storage member after alignment adjustment. was there.

  The present invention has been made in view of such circumstances, and an object of the present invention is to manufacture a liquid ejecting apparatus that can suppress an increase in the number of adjustment steps related to the ejection of the liquid ejecting apparatus or can be downsized. It is to provide a method and a liquid ejecting apparatus.

The manufacturing method of the liquid ejecting apparatus of the present invention has been proposed in order to achieve the above object, and the container holding member to which the first liquid container and the second liquid container are detachably mounted, A method for manufacturing a liquid ejecting apparatus, comprising: an ejecting mechanism that ejects liquid supplied from a liquid container from a nozzle; and an adjustment member,
The adjustment member is disposed at a position that is covered with the first liquid container and not covered with the second liquid container,
An ejection step of ejecting liquid by the ejection mechanism in a state where the first liquid container is not attached and the second liquid container is attached;
An adjustment step of adjusting the liquid ejection device by the adjustment member based on the ejection result in the ejection step;
It is characterized by including.

  According to the present invention, since the ejecting step and the adjusting step can be performed in a state where the first liquid container is not attached, the number of times of attaching and detaching the liquid container necessary in the manufacturing process is reduced, and thereby the entire manufacturing process is performed. Can be shortened. Further, by reducing the number of times that the liquid container is attached / detached, it is possible to reduce the adverse effect on the adjustment result due to the force or vibration acting on the adjusting member when the liquid container is attached / detached. Furthermore, since at least one adjusting member is disposed at a position covered by the first liquid container, the container holding member and the like can be reduced in size accordingly.

  In the above method, in the ejection step, the ejection mechanism can eject the liquid supplied from the second liquid container.

  According to this method, even if the ejection mechanism is driven to eject the liquid from the liquid flow path corresponding to the first liquid container in a state where the first liquid container is not mounted, the first liquid container There is a possibility that gas flows into the liquid flow path corresponding to the above and the liquid is not normally ejected. Thereby, there is a possibility that the adjustment by the adjustment member may be hindered, so that the adjustment by the adjustment member is performed without any trouble based on the injection result by the ejection mechanism ejecting the liquid supplied from the second liquid container. be able to.

  In the above method, it is desirable that the liquid brightness of the first liquid container is higher than the liquid brightness of the second liquid container.

  According to this, the brightness of the liquid in the first liquid container removed from the container holding member in the adjustment process is higher than the brightness of the liquid in the second liquid container ejected from the ejection mechanism in the ejection process. In other words, since the brightness of the liquid in the second liquid container is lower than the brightness of the liquid in the first liquid container, it becomes easier for an inspection person to visually recognize the ejection result when the inspection is performed visually. Even when the inspection is performed based on the image data of the ejection result, the ejection result is easily recognized by a computer or the like. As a result, the adjustment accuracy in the adjustment process based on the injection result is improved.

Further, in the above method, the liquid ejecting apparatus includes a fastening member provided at a position not covered by the first liquid container and the second liquid container,
The adjustment step is preferably performed by the fastening member and the adjustment member.

  By this method, adjustment using the fastening member can be performed regardless of whether the first liquid container and the second liquid container are attached or detached.

In the above method, the liquid ejecting apparatus includes a flow path member having a flow path for supplying the liquid from the first liquid container and the second liquid container to the ejection mechanism,
The ejection mechanism has a plurality of nozzle groups composed of nozzles that eject liquid from the second liquid container,
In the adjusting step, it is desirable to adjust alignment of the flow path member with respect to the container holding member.

  According to this, since a plurality of nozzle groups composed of nozzles from which the liquid from the second liquid container is ejected are provided, the container is held based on the ejection result when the liquid is ejected from each nozzle group. The alignment of the flow path member with respect to the member can be adjusted with higher accuracy.

  In the above method, each nozzle group to which the liquid from the second liquid container is ejected sandwiches the nozzle group to which the nozzle from which the liquid from the first liquid container is ejected belongs. It is desirable.

  According to this method, in the inspection pattern, the nozzle group ejected from the second liquid container is positioned outside the nozzle group corresponding to the first liquid container in the arrangement direction of the nozzle groups. Since the shift appears more conspicuously, the alignment shift can be specified more easily, and the alignment can be adjusted with higher accuracy.

In the above method, the container holding member is a carriage for reciprocating the flow path member,
In the adjustment step, the carriage and the flow path member can be fixed.

  According to this method, the alignment of the flow path member with respect to the carriage can be adjusted.

  Furthermore, in the above method, it is desirable that the relative position between the carriage and the nozzle of the ejection mechanism is adjusted in the adjustment step.

  According to this method, it is possible to align the position of the nozzle with respect to the carriage with higher accuracy. As a result, the landing accuracy of the liquid ejected from the nozzle is improved.

  Further, in the above method, before the ejection step, the second liquid container is mounted on the container holding member, and the ejection mechanism is connected to the connection portion of the container holding member with the first liquid container. In a state where a flow restricting member for restricting the flow of gas to is attached, the nozzles corresponding to each of the first liquid container and the second liquid container are simultaneously sucked into the liquid flow path of the ejection mechanism. It is desirable to include a filling step of filling the liquid from the second liquid container.

  According to this method, the negative pressure due to suction is applied to the liquid flow path to be filled with the liquid by attaching the flow restricting member to the connection portion where the first liquid container is mounted when the liquid is filled. It is possible to act more effectively, and the liquid filling operation can be performed more efficiently and smoothly.

The liquid ejecting apparatus of the present invention includes a container holding member to which the first liquid container and the second liquid container are detachably attached,
An ejection mechanism for ejecting the liquid supplied from each liquid container from a nozzle;
An adjustment member;
With
The adjustment member is disposed at a position covered with the first liquid container but not covered with the second liquid container.

  According to this configuration, the adjustment member is disposed at a position covered by the first liquid container, and accordingly, the container holding member and the like can be reduced in size.

  Further, in the above configuration, the adjustment of the relative position between the container holding member and the fixed member fixed to the container holding member is performed by the adjustment member based on the ejection result when the liquid is ejected by the ejection mechanism. In the case where the first liquid container is not attached to the container holding member and the second liquid container is attached to the container holding member, the ejection mechanism is moved from the second liquid container. It is desirable to be configured to eject liquid.

  According to this configuration, since the ejection mechanism can eject the liquid from the second liquid container without mounting the first liquid container, the first liquid container can be attached and detached in advance when performing the adjustment by the adjustment member. Is no longer necessary.

In the above configuration, the container holding member has a cover that covers at least a part of the first liquid container and the second liquid container,
The adjustment member is configured to be rotatable around a rotation axis,
The cover may be configured to have an opening on an extension line in the rotation axis direction of an operation position for rotating the adjustment member.

  According to this configuration, the adjustment can be performed by rotating the adjustment member with the cover closed, so that workability is improved.

In the above configuration, the container holding member is a carriage for reciprocating the flow path member in the first direction,
The fixed member is a flow path member having a flow path for supplying liquid from the first liquid container and the second liquid container to the ejection mechanism;
A fastening member for fixing the carriage and the flow path member;
The adjustment member is used to adjust the alignment between the carriage and the flow path member,
The fastening member is preferably provided at a position not covered by the first liquid container and the second liquid container.

  According to this configuration, alignment adjustment can be performed using the adjustment member at a position covered by the first liquid container and the fastening member at a position not covered by the liquid container. Since the adjustment member is covered and protected by the liquid container except for the replacement operation of the liquid container, an unintended external force is suppressed from being applied to the adjustment member. Thereby, the position shift of the flow path member is suppressed after the alignment is adjusted. In addition, alignment using the fastening member can be performed regardless of whether the first liquid container and the second liquid container are attached or detached.

  The said structure WHEREIN: It is desirable that the number of the said adjustment members is smaller than the number of the said fastening members.

  According to this configuration, since the number of adjustment members covered by the liquid container is smaller than that of the fastening members, the number of liquid containers that need to be removed when adjusting by the adjustment member can be reduced.

  The said structure WHEREIN: It is desirable to employ | adopt the structure arrange | positioned in the non-linear form in which the said adjustment member and the said fastening member are provided 3 or more in total, and 3 or more do not line up on the same straight line.

  According to this configuration, the adjustment member and the fastening member are provided in a total of three or more, and are arranged in a non-linear shape in which three or more are not arranged on the same straight line. It becomes possible to stabilize.

In the above configuration, a flow path member having a flow path for supplying the liquid from the first liquid container and the second liquid container to the ejection mechanism,
The flow path member includes an upstream member to which liquid is supplied from the first liquid container and the second liquid container, and a downstream member to which liquid is supplied from the upstream member,
The adjustment member and the fastening member are provided on the upstream member side to fix the upstream member and the carriage,
In the first direction, the upstream member may be longer than the downstream member, and the fastening member may be disposed at a position away from the downstream member.

  According to this configuration, the downstream member can be downsized without being affected by the upsizing of the liquid container.

  In the above configuration, in the first direction, it is desirable to employ a configuration in which the fastening member is located closer to the downstream member than the center of the protruding range in the protruding range of the upstream member deviated from the downstream member. .

  According to this configuration, the distance between the fastening members is as much as possible by positioning the fastening member on the downstream member side from the center of the projecting range in the projecting range of the upstream member deviated from the downstream member in the first direction. Get closer to. As a result, while the fastening member is arranged in the protruding range of the upstream member, the alignment adjustment accuracy is improved, and even if the upstream member is warped, the injection mechanism is warped following this, It is suppressed that the distance from the nozzle of the mechanism to the landing target is changed. As a result, it is suppressed that the result of alignment adjustment changes.

In the above configuration, the ejection mechanism includes a plurality of nozzle groups configured of nozzles that eject liquid from the second liquid container,
It is desirable that each nozzle group to which the liquid from the second liquid container is ejected adopts a configuration in which a nozzle group to which the nozzle from which the liquid from the first liquid container is ejected is sandwiched.

  According to this configuration, when the nozzle group ejected from the second liquid container is located outside the nozzle group corresponding to the first liquid container in the juxtaposition direction of the nozzle group, the amount of misalignment is reduced. It becomes easier to specify and the alignment can be adjusted with higher accuracy.

  In the above configuration, it is desirable that the luminance of the liquid in the first liquid container is higher than the luminance of the liquid in the second liquid container.

  According to this configuration, the brightness of the liquid in the first liquid container is higher than the brightness of the liquid in the second liquid container. In other words, the brightness of the liquid in the second liquid container is higher than that of the first liquid container. By being lower than the brightness of the liquid, it becomes easier for an inspection person to visually check the injection result by the injection mechanism, and the computer is also used when the inspection is performed based on the image data of the injection result. Etc., the injection result is easily recognized. As a result, adjustment accuracy in alignment adjustment based on the injection result is improved.

FIG. 2 is a front view illustrating the configuration of a printer. It is a top view explaining the structure of a head unit. It is an upper surface figure explaining the composition of the head unit in the state where the cover was removed. FIG. 10 is a top view illustrating the configuration of the head unit in a state where a third ink cartridge is removed. FIG. 3 is a top view illustrating a configuration of a recording head. FIG. 3 is a front view illustrating the configuration of a recording head. FIG. 3 is a plan view illustrating a configuration of a nozzle formation surface of a recording head. FIG. 3 is a cross-sectional view of a recording head. It is sectional drawing of an injection unit. It is a top view explaining the state of the head unit at the time of alignment adjustment. 6 is a flowchart illustrating a flow of a printer manufacturing method. 6 is a flowchart illustrating a flow of a conventional printer manufacturing method as a comparative example. It is a top view explaining the state of the head unit at the time of alignment adjustment in 2nd Embodiment.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the accompanying drawings. Note that, in the embodiments described below, various limitations are made as preferred specific examples of the present invention. However, the scope of the present invention is not limited to the following description unless otherwise specified. However, the present invention is not limited to this embodiment. In the following, an ink jet recording apparatus (hereinafter referred to as a printer) will be described as an example of the liquid ejecting apparatus of the invention.

  FIG. 1 is a front view illustrating a configuration of a printer 1 in which the head unit 4 is mounted. The printer 1 includes a frame 2 and a platen 3 disposed in the frame 2, and a recording medium (liquid such as recording paper, cloth, or resin sheet) is placed on the platen 3 by a transport mechanism (not shown). ) Is transported. A guide rod 5 is installed in the frame 2 in parallel with the platen 3, and a carriage 6 accommodating a recording head 8 is slidably supported on the guide rod 5. The carriage 6 reciprocates along the guide rod 5 in the main scanning direction (first direction) that intersects the sub-scanning direction (second direction), which is the conveyance direction of the recording medium, by driving a carriage moving mechanism (not shown). It is configured as follows. The head unit 4 is configured by mounting a recording head 8 on the carriage 6. The printer 1 uses ink (a kind of liquid in the present invention) from the nozzles 34 (see FIG. 5) of the recording head 8 while moving the carriage 6 relative to the recording medium placed on the platen 3 in the main scanning direction. Is ejected to land the ink on the recording medium, thereby forming (recording / printing) a landing pattern such as characters and images.

  An ink cartridge 7 (a type of liquid container) storing ink is detachably mounted on the carriage 6 (a type of container holding member in the present invention). Examples of the ink include water-based dye ink or pigment ink, organic solvent-based (ecosolvent-based) ink having higher weather resistance than these water-based inks, and photo-curable ink that is cured by irradiation with ultraviolet rays. Well-known various compositions can be used. In the present embodiment, the configuration in which the ink cartridge 7 is mounted on the carriage 6 is illustrated. However, the present invention is not limited to this, and the ink cartridge 7 is disposed on the main body side of the printer 1 and is recorded via the ink supply tube. A configuration (off-carriage type) supplied to the head 8 can also be adopted. In this configuration, a member called a sub tank (a kind of liquid container) is attached to the carriage 6, and after ink from the ink cartridge is supplied to the sub tank, the ink is supplied from the sub tank to the recording head 8. . Some of these sub tanks have a function of adjusting the supply pressure of ink supplied to the recording head 8 to be constant. Alternatively, a configuration in which one type of ink supply tube liquid container is directly connected to a connection portion such as the ink introduction needle 24 of the recording head 8 mounted on the carriage 6 may be employed.

  At the home position, which is a non-recording area of the printer 1, a wiping mechanism 11 for wiping the nozzle forming surface (the surface facing the platen 3; see FIG. 8) of the recording head 8 mounted on the carriage 6 is disposed. ing. The wiping mechanism 11 has a wiper 12, and the wiper 12 is configured by an elastic / flexible member such as rubber or elastomer. In addition, it is possible to employ a blade body whose surface is covered with a cloth. The wiping mechanism 11 arranges the tip of the wiper 12 at a position where it can contact the nozzle forming surface of the recording head 8 during wiping. Then, the nozzle forming surface is wiped by the wiper 12 by relatively moving the wiper 12 in a state where the tip of the wiper 12 is in contact with the nozzle forming surface.

  A capping mechanism 13 is disposed adjacent to the wiping mechanism 11 at or near the home position. The capping mechanism 13 has a cap 14 made of a tray-like elastic member that can come into contact with the nozzle forming surface of the recording head 8. The capping mechanism 13 is configured such that the space in the cap 14 functions as a sealing empty portion, and the cap 14 can be brought into close contact with the nozzle forming surface in a state where the nozzle 34 of the recording head 8 faces the sealing empty portion. ing. That is, the nozzle 34 is located in a space covered with the cap 14 that is in close contact with the nozzle forming surface and the nozzle forming surface. In addition, a pump unit is connected to the cap 14 via a drainage tube, and the inside of the sealing empty portion of the cap 14 can be made negative by the operation of the pump unit. In the initial filling process for filling the flow path inside the recording head 8 with ink from the ink cartridge 7 and the cleaning process for eliminating the clogging of the nozzles 34 and the ink flow path of the recording head 8, the cap 14 is used. When the pump unit is operated in a state of being in close contact with the nozzle forming surface and the inside of the sealed space is made negative, ink and bubbles are discharged from the nozzle 34 and discharged into the sealed space of the cap 14. In the present embodiment, the cap 14 is provided individually for each ejection unit 23 of the recording head 8. Therefore, in the initial filling process or the like, suction can be performed simultaneously from the nozzles 34 of all the nozzle arrays 49, or suction can be selectively performed for each of the ejection units 23. It is to be noted that a configuration in which only one cap 14 having a size capable of sealing the nozzle forming surface of one injection unit 23 is provided and suction is sequentially performed on each injection unit 23 using the cap 14 is adopted. Is also possible. In the above-described off-carriage type, the ink supply path on the upstream side (ink cartridge 7 side) of the recording head 8 is pressurized by, for example, an air pump to pressurize the flow path of the recording head 8 and the above. It is also possible to adopt a configuration for performing the initial filling process and the cleaning process.

  FIG. 2 is a top view of the head unit 4 with the cover 17 closed, and FIG. 3 is a top view of the head unit 4 with the cover 17 removed. FIG. 4 is a top view of the head unit 4 in a state where the cover 17 is removed and the third ink cartridge 7c is removed. The head unit 4 in this embodiment is configured by attaching a recording head 8 and an ink cartridge 7 to a carriage 6. The carriage 6 in this embodiment is a box-shaped member having an open upper surface (a surface opposite to the platen 3 side), and is made of, for example, a synthetic resin. An insertion port (not shown) is provided at the bottom (bottom plate) of the carriage 6. Only the main body portion 22b (described later) of the holder 22 in the recording head 8 can be inserted into this insertion port, while the ink introduction member 21 (a kind of fixed member in the present invention) and the flange portion 22a of the holder 22 are inserted. The shape and dimensions cannot be obtained. Thus, when the recording head 8 is disposed in the inner space of the carriage 6, the main body portion 22 b of the holder 22 is exposed to the outside (lower surface side) of the carriage 6 through the insertion port, while the ink introduction member 21 and the holder Since the flange portion 22 a of 22 cannot pass through the insertion opening, it is seated on the upper surface of the bottom plate of the carriage 6. A total of three screw holes (not shown) corresponding to adjustment holes 20a to 20c, which will be described later, are formed at the arrangement position of the ink introduction member 21 in the carriage 6. The recording head 8 disposed on the carriage 6 is subjected to alignment adjustment as will be described later, and then a fastening member 18 such as a screw (a kind of fastening member in the present invention, which is a kind of adjusting member in a broad sense). Is screwed into the screw hole through the adjustment hole 20 and fixed (fastened).

  An ink cartridge 7 is detachably mounted on the carriage 6 to which the recording head 8 is fixed so as to overlap the upper portion of the recording head 8. In the present embodiment, ink cartridges 7a to 7d of a total of four colors (for example, cyan (C), magenta (M), yellow (Y), and black (K)) are mounted on the carriage 6, respectively. In this embodiment, the first ink cartridge 7a is black ink, the second ink cartridge 7b is magenta ink, the third ink cartridge 7c (corresponding to the first liquid container in the present invention) is yellow ink, Cyan ink is stored in the fourth ink cartridge 7d (corresponding to the second liquid container in the present invention). Among these, the dimension of the first ink cartridge 7a in the first direction (the cartridge side-by-side direction) is designed to be larger than the dimensions of the other ink cartridges 7 in the first direction. For this reason, the capacity of the first ink cartridge 7 a is larger than the capacity of the other ink cartridges 7.

  In the present embodiment, the carriage 6 is provided with a cover 17 that can be opened and closed. In the closed state, each ink cartridge 7 mounted on the carriage 6 is partially covered and pressed toward the bottom side of the carriage 6. Thus, the ink cartridge 7 is securely attached by the carriage 6. Thereby, it is configured to prevent the connection with the recording head 8 from becoming insufficient or from being accidentally disconnected. An opening 19 is formed in the cover 17, and a part of the upper surface of the ink cartridge 7 is exposed in the opening 19 in a state where the cover 17 is closed. Further, as will be described later, the fastening member 18 (18c) can be exposed with the third ink cartridge 7c removed and the cover 17 closed during alignment adjustment (see FIG. 10). The shape of the opening 19 is not limited to that illustrated. The point is that the fastening member 18 at the operation position (position (force point) where the force for rotation is applied) for rotating the fastening member 18 (or the adjusting member 30) configured to be rotatable about the rotation axis is used. Any shape may be used as long as it is open on an extension line in the rotation axis direction. Further, the periphery of the opening 19 may not be surrounded by the material of the cover 17 and may be, for example, a notch.

  FIG. 5 is a top view of the recording head 8, and FIG. 6 is a front view of the recording head 8. FIG. 7 is a plan view for explaining the configuration of the nozzle formation surface of the recording head 8. Further, FIG. 8 is a sectional view of the recording head 8. In FIG. 5, a range X indicated by a broken line indicates a range of the nozzle formation surface. In FIG. 8, the flow path from the second ink introduction needle 24b into which the ink (cyan ink) from the fourth ink cartridge 7d is introduced to the ejection unit 23 is mainly illustrated. The flow paths into which ink from the cartridge 7 is introduced communicate with the ejection units 23 through different positions in the depth direction of the drawing. The recording head 8 in this embodiment includes an ink introduction member 21 (a kind of flow path member or upstream member in the present invention), an ejection unit 23 (a kind of ejection mechanism in the present invention), and a holder 22 (a flow path member in the present invention). Or, a kind of downstream member) is laminated. In the following, for convenience, the stacking direction of each member will be described as the vertical direction.

  The ink introduction member 21 in the present embodiment is a member disposed on the top of the recording head 8 and is longer in the main scanning direction than the holder 22 so that the ink cartridges 7a to 7d can be disposed on the upper surface side. Is formed. A plurality of ink introduction needles 24 are erected on the upper surface of the ink introduction member 21 with a filter 25 interposed. The ink introduction needle 24 is provided for each ink type (color). In the present embodiment, a total of four ink introduction needles 24a to 24d are juxtaposed along the main scanning direction corresponding to the four ink cartridges 7a to 7d. Both the ink introduction member 21 and the ink introduction needle 24 are made of synthetic resin. The filter 25 is a member that filters the ink introduced from the ink introduction needle 24. For example, a filter in which a metal is knitted in a mesh shape or a thin metal plate with a large number of holes is used. The filter 25 captures foreign matter and bubbles in the ink. In this embodiment, when the ink cartridge 7 is mounted on the carriage 6, the ink introduction needle 24 is inserted into the ink cartridge 7. That is, the ink introduction needle 24 functions as a part of a connection portion with the ink cartridge 7 in the carriage 6. Then, the ink in the ink cartridge 7 is introduced into the internal flow path from the introduction hole 26 (FIG. 8) provided at the tip of the ink introduction needle 24. When ink is introduced from the ink introduction needle 24, it passes through the filter 25, passes through the introduction flow path 27 formed inside the ink introduction member 21, and is supplied to the holder 22 disposed below the ink introduction member 21. It is supplied to the flow path 28 via the flow path connection portion 29. Note that the ink introduction member 21 in the present embodiment employs a configuration in which the ink is introduced by inserting the needle-like ink introduction needle 24 into the ink cartridge 7, but is not limited thereto. For example, a porous material such as a non-woven fabric or a sponge is disposed in the ink introduction portion of the ink introduction member 21, and a corresponding porous material is provided in the lead-out portion of the liquid container such as an ink cartridge or a sub tank correspondingly. A so-called foam type configuration in which both porous members are brought into contact with each other to exchange liquid by a capillary phenomenon can also be adopted.

  As shown in FIG. 5, the ink introduction member 21 has adjustment holes 20 through which fastening members 18 for fixing to the carriage 6 are inserted so as to correspond to the screw holes of the carriage 6 in a total of three locations. . Specifically, the first adjustment hole 20a and the first adjustment hole 20a are spaced apart from each other along the main scanning direction (the longitudinal direction of the ink introduction member 21) on one side (the upper side in FIG. 5) in the sub-scanning direction. 2 adjustment holes 20b are formed. A third adjustment hole 20c is formed on the other side (lower side in FIG. 5) in the sub-scanning direction. Thus, among the adjustment holes 20a to 20c (and the fastening members 18a to 18c that are inserted and combined with each other), two sets of the ink introduction members 21 are arranged on one side in the sub-scanning direction of the ink introduction member 21. 21 are arranged along the longitudinal direction of 21 and the remaining one set is arranged on the other side of the ink introduction member 21 in the sub-scanning direction, so that these three sets are not aligned on the same straight line. They are arranged in a non-linear shape (triangular shape in plan view). By adopting such a layout, the virtual planes passing through these three sets are uniquely defined, so that the alignment between the ink introduction member 21 (recording head 8) and the carriage 6 is stabilized. It becomes possible.

  Each of the adjustment holes 20a to 20c is a long hole set longer than the shaft diameter of the fastening member 18 in a predetermined direction. The longitudinal directions of the adjustment holes 20a to 20c are different from each other. For example, the longitudinal direction of the first adjustment hole 20a is inclined within a range of 10 to 20 ° with respect to the main scanning direction. Similarly, the longitudinal direction of the second adjustment hole 20b is inclined within a range of 10 to 20 ° with respect to the sub-scanning direction, and the longitudinal direction of the third adjustment hole 20c is approximately −10 with respect to the sub-scanning direction. It inclines in the range of -20 degrees (340-350 degrees). With this configuration, the arrangement position (alignment adjustment) of the ink introduction member 21 with respect to the carriage 6 can be adjusted. That is, the recording head 8 is arranged on the carriage 6 and the fastening members 18a to 18c are respectively passed through the adjustment holes 20a to 20c and temporarily fixed in the screw holes, that is, the shafts of the adjustment hole 20 and the fastening member 18 In the state where the ink introduction member 21 can be moved within the range of the gap formed therebetween, the position of the ink introduction member 21 with respect to the carriage 6, that is, the position of the recording head 8 in the main scanning direction and the sub scanning direction, and the respective directions The tilt can be finely adjusted.

  After the alignment is adjusted, the recording head 8 can be fixed to the carriage 6 with the alignment adjusted by fixing the ink introduction member 21 to the carriage 6 by the fastening members 18a to 18c. In other words, in the present embodiment, these adjustment holes 20a to 20c and the fastening members 18a to 18c are used as adjustment members in a broad sense related to alignment adjustment (the difference between the adjustment member in the broad sense and the adjustment member in the narrow sense will be described later). Function. That is, the combination of the adjustment hole 20 and the fastening member 18 corresponding to the adjustment hole 20 is an adjustment member 30 for performing adjustment related to ink ejection of the ejection unit 23. The adjustment member 30 also serves as a fastening member. In this embodiment, in order to adjust the alignment, the operation of loosening or tightening the fastening members 18a to 18c of the adjustment members 30a to 30c, or the ink with respect to the carriage 6 with the fastening member 18 loosened. The operation of adjusting the position of the introducing member 21 (recording head 8) corresponds to the adjustment of the liquid ejecting apparatus performed by the adjusting member in the present invention.

  These adjustment members 30a to 30c are located outside the nozzle formation surface of the recording head 8 when viewed in the stacking direction of the constituent members of the head unit 4 in the ink introduction member 21 (direction perpendicular to the nozzle formation surface). Has been placed. Of these adjustment members 30a to 30c, the first adjustment member 30a and the second adjustment member 30b that are arranged at positions not covered by the ink cartridge 7 and arranged in the main scanning direction are shown in FIG. As described above, the protrusion range protruding outward from the holder 22 of the ink introduction member 21 in the main scanning direction (the range indicated by the white arrow in FIG. 6 and ink from L1 corresponding to the side edge of the holder 22 in the main scanning direction) It is located within the range (range from L1 to Lc) on the holder 22 side from the center (position indicated by Lc in FIG. 6) in the center (the range of L2 corresponding to the side end of the introduction member 21). The third adjustment member 30c is formed in a range between the first adjustment member 30a and the first adjustment member 30b in the main scanning direction. As shown in FIG. 4 and the like, the third adjustment member 30c is a fastening member at the position covered by the third ink cartridge 7c on the upper surface of the recording head 8 disposed on the carriage 6, that is, at the time of alignment adjustment. The third ink cartridge 7c cannot be accessed by an adjustment tool such as a screwdriver for loosening or tightening the 18c (performing the adjustment member 30 for operations necessary for position adjustment and fixing). . This position is a position that is not covered by another ink cartridge 7 such as the second ink cartridge 7b. In FIG. 6, the position of the first adjusting member 30a is indicated by A, the position of the second adjusting member 30b is indicated by B, and the position of the third adjusting member 30c is indicated by C.

  As described above, the first adjustment member 30 a and the second adjustment member 30 b arranged in the longitudinal direction of the ink introduction member 21 are arranged in the protruding range, so that these adjustment members 30 a and 30 b are close to the holder 22. Placed in position. That is, the distance between the two adjustment holes 20a and 20b and the fastening member 18 is relatively close. As a result, while the accuracy of alignment adjustment described later is improved, even if the ink introduction member 21 is warped, the ejection unit 23, particularly the nozzle formation surface, follows from this, or from the nozzle to the recording medium. It is suppressed that the distance of is changed. As a result, it is suppressed that the result of alignment adjustment changes. Further, since at least one of the adjustment members 30 is disposed at a position covered with the ink cartridge 7, the adjustment member or the like can be accessed in a state where the entire adjustment member is not covered with the ink cartridge (the ink cartridge is mounted). Compared with the configuration arranged at the position), the carriage 6, the recording head 8, and the head unit 4 can be reduced in size accordingly. In addition, compared with a configuration in which all of the adjustment members are arranged at positions where they are covered with the ink cartridge, adjustment using the adjustment member 30 can be easily performed regardless of whether the ink cartridge 7 is attached or detached.

  The holder 22 includes a supply channel 28 that guides the ink introduced from the ink introduction needle 24 to the ejection unit 23 side, a circuit board (not shown) that handles an electrical signal of a drive signal that drives the piezoelectric element 39 of each ejection unit 23, and the like. It is a member which has inside. In FIG. 8, the supply channel 28 is formed in the holder 22 itself, but the present invention is not limited to this, and the channel member accommodated in the holder 22 (separate from the holder 22). It is also possible to adopt a configuration in which the supply flow path 28 is formed in the member. The holder 22 in the present embodiment includes a flange portion 22a on the ink introduction member 21 side and a main body portion 22b on the downstream side of the flange portion 22a. The flange portion 22a is a member formed larger than the size of the main body portion 22b in the main scanning direction and smaller than the size of the ink introduction member 21. Inside the holder 22, a supply channel 28 is provided corresponding to each ink introduction needle 24. Each supply channel 28 branches into two in the middle and communicates with the inlet 42 of the corresponding injection unit 23. Thus, the size of the holder 22 is set smaller than the size of the ink introduction member 21 in the main scanning direction (the direction in which the ink cartridges 7 are arranged side by side), which is affected by the increase in the capacity of the ink cartridge 7. There is no reduction in size. Thereby, it can contribute to size reduction and weight reduction as the head unit 4 whole.

  On the lower surface side inside the holder 22, a plurality of housing empty portions 31 that are spaces capable of housing the ejection units 23 are partitioned. The accommodation space 31 is open on the lower surface side (the side facing the recording medium during the printing operation), and the ejection unit 23 joined to the fixed plate 32 from the opening is accommodated. The fixed plate 32 is made of, for example, a metal plate material such as stainless steel. By joining the lower surface (nozzle plate 35 or a member disposed around the nozzle plate 35) of each injection unit 23 to the fixed plate 32, the height direction of these injection units 23 (perpendicular to the nozzle plate 35). (Direction of direction) is defined. The fixing plate 32 has openings 33 corresponding to the respective injection units 23. As described above, in the state where the fixing plate 32 is joined to the lower surface of each ejection unit 23, the region where the nozzle 34 of the nozzle plate 35 of each ejection unit 23 is formed is exposed in the opening 33. Then, when the ejection unit 23 is accommodated in a state of being positioned in the accommodation space 31 of the holder 22, the unit internal flow path including the nozzle 34 and the pressure chamber 46 of the ejection unit 23 communicates with the supply flow path 28. The ink introduced from the ink cartridge 7 through the ink introduction needle 24 is filtered by the filter 25, and then the ink passage (liquid passage) from the introduction passage 27 and the supply passage 28 to the nozzle 34 of the ejection unit 23. A kind of).

  In the present embodiment, the injection unit 23 is joined by an adhesive or the like in a state where the nozzle plate 35, the communication substrate 36, the pressure chamber forming substrate 37, the vibration plate 38, the piezoelectric element 39, and the protective substrate 40 are laminated. 41 is attached. The unit case 41 is a member formed with an introduction port 42 through which ink from the ink cartridge 7 side is introduced and a case flow path 44 through which the ink introduced from the introduction port 42 is introduced into the common liquid chamber 43 side. . On the lower surface side of the unit case 41, a storage hollow portion 45 that is recessed in a rectangular parallelepiped shape from the lower surface to the middle of the unit case 41 in the height direction is formed. The storage space 45 is a space for storing the pressure chamber forming substrate 37, the vibration plate 38, the piezoelectric element 39, and the protective substrate 40. In this accommodated state, the upper surface of the communication substrate 36 is bonded to the lower surface of the unit case 41.

  The pressure chamber forming substrate 37 in the present embodiment is made of, for example, a silicon substrate. In the pressure chamber forming substrate 37, a plurality of pressure chamber empty portions that define the pressure chamber 46 are formed by anisotropic etching corresponding to the nozzles 34 of the nozzle plate 35. One (upper surface side) opening of the pressure chamber vacant portion of the pressure chamber forming substrate 37 is sealed by the diaphragm 38. Further, a communication substrate 36 is bonded to the surface of the pressure chamber forming substrate 37 opposite to the vibration plate 38, and the other opening of the pressure chamber space is sealed by the communication substrate 36. Thereby, the pressure chamber 46 is partitioned. The pressure chamber 46 communicates with the nozzle 34 through the nozzle communication port 42 and also communicates with the common liquid chamber 43 through the individual communication port 47. A plurality of pressure chambers 46 are arranged in parallel corresponding to each nozzle 34. The communication substrate 36 is a plate material made of a silicon substrate in the same manner as the pressure chamber forming substrate 37. In this communication substrate 36, an empty portion serving as a common liquid chamber 43 (also referred to as a reservoir or a manifold) provided in common to the plurality of pressure chambers 46 of the pressure chamber forming substrate 37 is formed by anisotropic etching. The common liquid chamber 43 is a long space along the direction in which the pressure chambers 46 are arranged side by side. The pressure chamber forming substrate 37 and the vibration plate 38 may be formed integrally or separately. Further, the nozzle communication port 42 may be formed in the pressure chamber forming substrate 37 without providing the communication substrate 36.

  As shown in FIG. 7, the nozzle plate 35 of each injection unit 23 is a plate material in which a plurality of nozzles 34 are opened in a row. In the present embodiment, a plurality of nozzles 34 are provided at a predetermined pitch to form a nozzle row 49 (corresponding to a nozzle group in the present invention). The nozzle plate 35 is made of, for example, a silicon substrate, and a cylindrical nozzle 34 is formed on the substrate by dry etching. In the present embodiment, a total of two nozzle rows 49 are formed on the nozzle plate 35 of each jet unit 23, and the print head 8 is provided with a total of four jet units 23. 8, a total of eight nozzle rows 49a to 49h are arranged in parallel in the main scanning direction. Two nozzle rows 49 correspond to each ink cartridge 7 mounted on the carriage 6. More specifically, the cyan ink of the fourth ink cartridge 7 d is assigned to the first nozzle row 49 a and the eighth nozzle row 49 h located at both ends of the nozzle row 49. This cyan ink is an ink used for forming a test pattern described later. Similarly, the yellow ink in the third ink cartridge 7c is in the second nozzle row 49b and the seventh nozzle row 49g, and the magenta ink in the second ink cartridge 7b is in the third nozzle row 49c and the sixth nozzle row 49f. The black ink of the cartridge 7a is assigned to the fourth nozzle row 49d and the fifth nozzle row 49e, respectively.

  In the present embodiment, the first nozzle row 49a and the eighth nozzle row 49h corresponding to the cyan ink used for forming the inspection pattern are at least the ink (yellow ink) of the ink cartridge 7c that is removed during alignment adjustment. The layout is such that the corresponding second nozzle row 49b and seventh nozzle row 49g are sandwiched therebetween. As described above, by providing a plurality of nozzle rows 49 for ejecting cyan ink used for forming the test pattern, it is possible to obtain a test pattern that is an ejection result when ink is ejected from each of the nozzle rows 49a to 49h. The alignment adjustment described later based on this can be performed with higher accuracy. In addition, the first nozzle row 49a and the eighth nozzle row 49h corresponding to the cyan ink used for forming the inspection pattern are the second nozzle row 49b and the second nozzle row 49b corresponding to the ink of the ink cartridge 7c to be removed at the time of alignment adjustment. If the recording head 8 is misaligned by being arranged outside the seven nozzle rows 49g in the nozzle row juxtaposition direction (outside the center position of the arrangement of the nozzle rows 49), Since the misalignment appears more prominently in the inspection pattern, it is easier to specify the misalignment amount based on the inspection pattern, and the alignment can be adjusted with higher accuracy. It should be noted that the nozzle rows 49 corresponding to the inks used for forming the test pattern do not necessarily have to be positioned at both ends of the nozzle rows 49 in the juxtaposed direction. The other nozzle row 49 may be located outside. Further, regarding the nozzle row 49 corresponding to the ink cartridge 7 to be removed at the time of alignment adjustment, a part of the nozzle row 49 is not sandwiched by the nozzle row 49 corresponding to the ink used for forming the inspection pattern. Also good. For example, one of the two nozzle rows 49 corresponding to the ink cartridge 7 removed during alignment adjustment is sandwiched between the nozzle rows 49 corresponding to the ink used for forming the inspection pattern, and the other is inspected. A configuration in which the ink is not sandwiched between the nozzle rows 49 corresponding to the ink used for forming the pattern may be employed.

  Although it is desirable that at least two or more nozzle rows 49 corresponding to the ink used for forming the inspection pattern are provided, for other colors of ink, two nozzle rows 49 are not necessarily provided. It does not have to be assigned. That is, it is possible to adopt a configuration in which one nozzle row 49 is assigned to each color ink other than the test pattern forming ink, or a configuration in which three or more nozzle rows 49 are assigned to each color ink. . The number of nozzle rows 49 assigned to each color ink does not necessarily have to be the same. For example, a plurality of nozzle rows 49 are assigned to the ink used for forming the inspection pattern, and the other inks are respectively set. The configuration may be such that the nozzle rows 49 are assigned one by one. Further, a configuration in which a plurality of types (a plurality of colors) of ink are allocated to the same nozzle row 49 may be employed. Further, in the present embodiment, ink is supplied from one fourth ink cartridge 7d to the ink flow path of the recording head 8, and the ink flow path branches in the middle so that the first nozzle row 49a and the eighth nozzle row. For example, the ink cartridge 7 and the nozzle row 49 may be configured to correspond one-to-one. For example, when black ink is used for the test pattern, in a configuration in which two nozzle rows 49 for ejecting the ink are provided, two ink cartridges 7 storing the black ink are provided in the same number as the nozzle rows 49. It is done. Further, the inspection pattern may be formed with only one nozzle row 49, or the inspection pattern may be formed with two color nozzle rows 49.

  The diaphragm 38 formed on the upper surface of the pressure chamber forming substrate 37 is made of, for example, silicon dioxide having a thickness of about 1 μm. An insulating film (not shown) is formed on the vibration plate 38. This insulating film is made of, for example, zirconium oxide. And the piezoelectric element 39 is formed in the position corresponding to each pressure chamber 46 on this diaphragm 38 and an insulating film, respectively. In this embodiment, on the piezoelectric element 39, the diaphragm 38 and the insulating film, a metal lower electrode film, a piezoelectric layer made of lead zirconate titanate (PZT), etc., and a metal upper electrode film (all (Not shown) are sequentially stacked (none shown). In this configuration, one of the upper electrode film and the lower electrode film is a common electrode, and the other is an individual electrode. In addition, an electrode film and a piezoelectric layer serving as individual electrodes are patterned for each pressure chamber 46.

  A protective substrate 40 is disposed on the upper surface of the communication substrate 36 on which the pressure chamber forming substrate 37 and the piezoelectric element 39 are stacked. The protective substrate 40 is made of, for example, glass, a ceramic material, a silicon single crystal substrate, a metal, a synthetic resin, or the like. Inside the protective substrate 40, a recess 48 is formed in a region facing the piezoelectric element 39 so as not to obstruct the driving of the piezoelectric element 39. The element terminal of the piezoelectric element 39 is electrically connected to one end of the flexible substrate 50. When a driving signal (driving voltage) is applied to the piezoelectric element 39 from the control unit side of the printer through the flexible substrate 50, the piezoelectric active part is bent and deformed according to the change of the applied voltage. A flexible surface that divides one surface 46, that is, the diaphragm 38 is displaced in a direction approaching the nozzle 34 or in a direction away from the nozzle 34. As a result, pressure fluctuations occur in the ink in the pressure chamber 46, and ink is ejected from the nozzles 34 using this pressure fluctuation.

  FIG. 10 is a plan view for explaining the state of the head unit 4 during alignment adjustment. FIG. 11 is a flowchart illustrating a method for manufacturing the printer 1. In the following, the alignment adjustment and fixing of the recording head 8 with respect to the carriage 6 will be mainly described. First, as will be described later, in order to fill the ink flow path of the recording head 8 with ink (cyan ink in the present embodiment) used to form an inspection pattern for alignment adjustment, the recording head 8 is temporarily set by the fastening member 18 in advance. The ink cartridge 7 is mounted on the carriage 6 in the retained state (S1). Here, for alignment adjustment, it is necessary to make an adjustment tool such as a driver accessible to each of the adjustment members 30a to 30c. In the present embodiment, since the third adjustment member 30c is disposed at a position covered by the third ink cartridge 7c, at least the third ink cartridge 7c is not mounted so as to expose the third adjustment member 30c. . In this embodiment, after the first ink cartridge 7a, the second ink cartridge 7b, and the fourth ink cartridge 7d are mounted in the cartridge mounting step S1, the cover 17 is closed as shown in FIG. As a result, the ink cartridges 7a, 7b, and 7d are more reliably mounted. Since the opening 17 is formed in the cover 17, the third adjustment member 30 c is exposed in the opening 19. Therefore, an adjustment tool for loosening and tightening the third fastening member 18c of the third adjustment member 30c can be accessed while the cover 17 is closed during the subsequent alignment adjustment. That is, alignment adjustment can be performed with the cover 17 closed. For this reason, the cover 17 does not interfere with work, and workability is improved.

  Subsequently, an ink filling process is performed by the capping mechanism 13 (S2). That is, when the pump unit is operated and sucked in a state where the nozzle formation surface is capped by the cap 14, the ink in the ink cartridge 7 mounted on the carriage 6 is transferred to the nozzle 34 of the recording head 8. The flow path is filled. Here, since the cap 14 in this embodiment is independent for each ejection unit 23 as described above, it is possible to selectively fill the ink flow path to be filled with ink. That is, in the present embodiment, each of the nozzle rows 49a, 49c, 49d, 49e, 49f, and 49h other than the second nozzle row 49b and the seventh nozzle row 49g corresponding to the yellow ink of the third ink cartridge 7c. The ink flow path is filled with ink. However, even if the cap 14 is not independent for each ejection unit 23, it is sufficient that the ink used for forming the inspection pattern is filled.

  If the ink flow path to be filled is filled with ink, then the fastening member 18 of the adjustment member 30 that is fastened and fixed (temporarily secured) to the screw hole of the carriage 6 is loosened (S3). That is, the first fastening member 18a of the first adjustment member 30a, the second fastening member 18b of the second adjustment member 30b, and the third fastening member 18c of the third adjustment member 30c are illustrated within a range in which they do not come out of the screw holes. The position of the recording head 8 relative to the carriage 6 can be adjusted within a gap formed between the adjustment hole 20 and the shaft of the fastening member 18 by being sequentially rotated in the loosening direction by the adjustment tool that is not used. The In a broad sense, an operation for screwing the fastening member 18 into the screw hole and fastening, or an operation for loosening the fastened fastening member 18 (operation for releasing the fastening) is also adjusted by the adjusting member in the present invention. It is a kind of. As described above, with respect to the third adjustment member 30c provided at the position covered by the third ink cartridge 7c, the third adjustment is performed through the opening 19 of the cover 17 by removing the third ink cartridge 7c from the carriage 6. The operation | work which loosens the 3rd fastening member 18c of the member 30c with an adjustment tool (operation which rotates the 3rd fastening member 18c) can be performed.

  Next, a recording sheet is set in the printer 1, and an inspection pattern is printed (formed) by ejecting ink from the nozzles 34 of the recording head 8 onto the recording sheet (S4). That is, this process is a kind of injection process in the present invention. In addition, the inspection pattern formed thereby is a kind of ejection result in the present invention. As the inspection pattern, for example, ruled lines formed by ejecting ink from the nozzles 34 of at least two or more nozzle rows 49 are employed. That is, ruled lines (vertical ruled lines along the sub-scanning direction or horizontal ruled lines intersecting the sub-scanning direction) are printed from the plurality of nozzle rows 49 having different positions in the main scanning direction, and based on the positions of these ruled lines in the sub-scanning direction. Then, the presence / absence and degree of inclination of the recording head 8 with respect to the carriage 6 (inclination with respect to the main scanning direction and sub-scanning direction) are inspected. This inspection may be performed by visually confirming the inspection pattern printed on the recording paper by a person involved in the inspection, or the inspection pattern printed on the recording paper is optically read by a scanner or the like. Alternatively, it may be performed by image processing or the like based on the obtained image data of the inspection pattern. Various known methods can be employed as a method for inspecting the inclination of the recording head 8 with respect to the carriage 6. In short, any method that can grasp the inclination of the recording head 8 with respect to the carriage 6 based on the ejection result when the ink is ejected from the nozzle 34 may be used.

  In the present embodiment, cyan ink is used as ink for forming the inspection pattern. That is, when forming the test pattern, the yellow ink of the third ink cartridge 7c removed from the carriage 6 is not used. In order to eject yellow ink in a state where the third ink cartridge 7c is not mounted and the ink flow path corresponding to the third ink cartridge 7c is not filled with the yellow ink, the ejection unit 23 corresponding thereto is ejected. Even if the piezoelectric element 39 is driven, there is a possibility that gas (air) flows into the ink flow path corresponding to the yellow ink, the ink is not normally ejected from the nozzle 34, and the inspection pattern cannot be formed normally. There is a possibility that the alignment adjustment by the adjustment member may be hindered. In the present embodiment, by using the cyan ink of the fourth ink cartridge 7d mounted on the carriage 6 as the ink for forming the test pattern, the ink can be ejected from the corresponding nozzle 34. The alignment adjustment by the adjustment member 30 can be performed without hindrance based on the inspection pattern formed thereby. Further, according to the configuration of the present embodiment, since the ejection unit 23 can eject the ink from the fourth ink cartridge 7d without mounting the third ink cartridge 7c, the adjustment by the adjustment member 30c is performed in advance. It is not necessary to attach or detach the third ink cartridge 7c.

Further, as the ink for forming this test pattern, ink stored in the ink cartridge 7 removed from the carriage 6 in the alignment adjustment step (in this embodiment, stored in the third ink cartridge 7c). Those having lower luminance (lightness) on the recording medium (recording paper) than yellow ink) are used. In other words, the brightness of the yellow ink stored in the third ink cartridge 7c is higher than the brightness of the cyan ink stored in the second ink cartridge 7b. This luminance is represented by, for example, an L * value in the L * a * b * color system (CIELAB color space) defined in JIS Z8729. More specifically, the optical density (OD) of the printed matter obtained by performing 100% duty printing at a resolution of 1440 × 720 [dpi] on each recording medium using the ink of each ink cartridge 7 is spectroscopically analyzed. The L * obtained by measuring with a colorimeter is defined as “luminance”. The “duty” is defined by the following formula (A) and indicates a unit of the calculated value D.
D = 100 × (actual printing dot number) / (vertical resolution × horizontal resolution) (A)
100% duty means the maximum ink weight of a single color for a pixel.

  As described above, as the ink for forming the inspection pattern, ink having a lower luminance than the ink of the ink cartridge 7 removed from the carriage 6 in the alignment adjustment step is used, so that the inspection pattern is visually recorded on the recording head 8. When the inspection of the inclination (displacement of the nozzle position) is performed, it is easy for the inspection personnel to visually recognize, and also when it is performed based on the image data of the inspection pattern, it can be easily recognized by a computer or the like. Become. As a result, the determination accuracy for the inclination of the recording head 8 based on the inspection pattern is improved, and as a result, the adjustment system in the alignment adjustment is improved.

  In the present embodiment, the ink (cyan ink) used for forming the test pattern is the first nozzle row 49a positioned at both ends of the nozzle rows 49a to 49h in the recording head 8 in the nozzle row juxtaposition direction. Since it is assigned to the eighth nozzle row 49h, when the inspection pattern is formed using only the cyan ink, if the recording head 8 is misaligned in the inspection pattern, the misalignment appears more prominently. Therefore, the positional relationship of each nozzle 34 with respect to the carriage 6 can be inspected with higher accuracy. For this reason, in the present embodiment, the configuration in which only the third ink cartridge 7c is not mounted is illustrated, but the present invention is not limited to this, and the ink cartridge 7 other than the third ink cartridge 7c is used for forming the inspection pattern. Ink cartridges 7 (for example, the first ink cartridge 7a and the second ink cartridge 7b) of ink other than the ink to be printed may not be mounted. As described above, by adopting a configuration in which there are a plurality of ink cartridges 7 that do not need to be mounted on the carriage 6 during alignment adjustment, the degree of freedom in the layout of the adjustment members 30 is improved.

  Subsequently, based on the inspection pattern formed as described above, it is determined whether or not the alignment adjustment of the recording head 8 is necessary (S5). As a result of the inspection based on the inspection pattern, when it is determined that the alignment adjustment of the recording head 8 is necessary (Yes), the alignment adjustment of the recording head 8 in the carriage 6 is performed by adjusting the position of the ink introduction member 21 with respect to the carriage 6. Performed (S6). As a result, the positional relationship of each nozzle 34 of the recording head 8 with respect to the carriage 6 (the positional relationship between the carriage 6 and the dots ejected from the nozzle 34 and formed on the recording medium) is adjusted. Since the alignment adjustment of the recording head 8 in the carriage 6 is well known, a detailed description thereof will be omitted, but the carriage 6 can be adjusted within a gap formed between the adjustment hole 20 and the shaft of the fastening member 18. As long as the position of the recording head 8 can be adjusted, various adjusting mechanisms and members can be used. In the present embodiment, alignment adjustment is performed by using an adjustment mechanism (adjustment member in a narrow sense) provided in the carriage 6 separately from the adjustment members 30a to 30c. For example, a rotating cam mechanism or slide mechanism (not shown) having a cam surface that contacts the ink introduction member 21, or a contact surface that contacts the ink introduction member 21 and the ink introduction member 21 are biased toward the contact surface side. This is performed by a mechanism that is a combination with a biasing member. In addition, for example, a configuration in which the recording head 8 is held by a separate jig and the recording head 8 and the carriage 6 are relatively moved by the jig can be employed.

  Further, the third adjusting member 30c disposed at a position covered with the ink cartridge 7 is not provided with an adjusting mechanism separately from the adjusting members 30a to 30c, and the adjusting mechanism such as the cam mechanism or the slide mechanism is used. In addition, a configuration in which the first adjustment member 30a and the second adjustment member 30b located at positions not covered by the ink cartridge 7 mainly function as fastening members may be employed. In other words, in this case, the third adjustment member 30c directly performs alignment adjustment by itself (directly or indirectly exerting a force on the ink introduction member 21 which is a member to be aligned by operating the third adjustment member 30c). It functions as an adjustment member in a narrow sense for (acting). On the other hand, the first adjustment member 30a and the second adjustment member 30b mainly function as fastening members for fixing or fastening the ink introduction member 21 (recording head 8) directly or indirectly to the carriage 6, In itself, it does not function as a mechanism for adjusting alignment (adjusting member in a narrow sense), but the ink for the carriage 6 is within the gap formed between the adjusting hole 20 and the shaft of the fastening member 18 as described above. Since the position of the introduction member 21 (recording head 8) can be adjusted, it can be said that it is a broad adjustment member that performs alignment adjustment indirectly.

  There may be a plurality of adjustment mechanisms as adjustment members directly related to alignment adjustment, but at least one adjustment member (adjustment member in a narrow sense) is arranged at a position covered by any one of the ink cartridges 7, It is desirable that the adjustment tool or the like can be accessed (arranged at such a position) with the ink cartridge 7c removed. As described above, the adjustment member is covered and protected by the ink cartridge 7 except for the replacement operation of the ink cartridge 7, so that an unintended external force is suppressed from being applied to the adjustment member. Thereby, the positional deviation of the ink introduction member 21 (recording head 8) is suppressed after alignment adjustment. Moreover, it is desirable that the number of adjusting members is smaller than the number of fastening members. Thereby, it is possible to reduce the number of ink cartridges 7 that need to be removed from the carriage 6 during alignment adjustment by the adjustment member.

  If the alignment adjustment is performed, the inspection pattern is printed again (S4), and the subsequent steps (S4 to S6) are repeated until it is determined that the adjustment is unnecessary. As a result of the inspection based on the inspection pattern, when it is determined that the alignment adjustment of the recording head 8 is unnecessary (No in S5), that is, the recording head 8 is correctly attached without being inclined with respect to the carriage 6 (with respect to the carriage 6). If it is determined that the positional relationship between the nozzles 34 of the recording head 8 is in a desired state), the fastening member 18 of the adjustment member 30 is tightened to fix the recording head 8 to the carriage 6 ( S7). That is, in the present embodiment, the first fastening member 18a of the first adjustment member 30a, the second fastening member 18b of the second adjustment member 30b, and the third fastening member 18c of the third adjustment member 30c are tightened by the adjustment tool. The recording head 8 is permanently fixed to the carriage 6 by being sequentially rotated in the direction. Even in this case, the operation of tightening the third fastening member 18c of the third adjustment member 30c with the adjustment tool through the opening 19 of the cover 17 (operation for rotating the third fastening member 18c) can be performed. The ink introduction member 21 (recording head 8) and the carriage 6 do not have to be directly fixed. For example, another member is disposed between the ink introduction member 21 and the carriage 6 so that the ink introduction is performed. The member 21 may be configured to be indirectly fixed to the carriage 6.

  If the recording head 8 is fixed to the carriage 6, the third ink cartridge 7c that has been removed for alignment adjustment is then mounted on the carriage 6 (S8). At this time, since the recording head 8 is already fixed to the carriage 6 by the fastening members 18a to 18c after the alignment adjustment, the third ink cartridge 7c is attached between the recording head 8 and the carriage 6 with the mounting work. Even if an external force is applied, the positional deviation of the recording head 8 is suppressed, and the alignment adjustment result can be maintained satisfactorily. Subsequently, a filling process of ink stored in the third ink cartridge 7c is performed by the capping mechanism 13 (S9). That is, the yellow ink of the third ink cartridge 7c is selectively filled in the ink flow paths of the nozzle rows 49 other than the second nozzle row 49b and the seventh nozzle row 49g corresponding to the yellow ink of the third ink cartridge 7c. .

  As described above, the alignment adjustment and fixing of the recording head 8 with respect to the carriage 6 are performed. Here, for comparison with the manufacturing method according to the present invention, the manufacturing method performed in the conventional configuration will be briefly described based on the flowchart of FIG. The description will be made on the assumption that a part of the adjustment member is covered with a specific ink cartridge in the conventional head unit, and the adjustment tool or the like cannot be accessed to the adjustment member in a state where the ink cartridge is mounted. First, all ink cartridges are mounted on the carriage (S11), and after ink filling (S12), the ink cartridge covering the adjustment member is removed, and the adjustment member covered with the ink cartridge is exposed. (S13). Then, after the adjustment member is loosened (S14), the removed ink cartridge is mounted on the carriage again (S15). When the inspection pattern printing (S16) and alignment adjustment (S18) are completed (No in S17), the ink cartridge covering the adjustment member is removed again to expose the adjustment member covered by the ink cartridge. (S19). Then, after the recording head is permanently fixed to the carriage by the fastening member (S20), the removed ink cartridge is mounted on the carriage (S21). Thus, in the conventional manufacturing method, the number of insertions and removals of the ink cartridge is increased as compared with the manufacturing method according to the present invention. In addition, when the ink cartridge is removed after the alignment adjustment and before the main fixing, there is a possibility that the position of the recording head is shifted due to an external force acting between the recording head and the carriage. From the viewpoint of reducing the number of steps for inserting and removing the cartridge, it may be possible to employ a configuration in which the adjustment member is disposed at a position not covered by the ink cartridge. However, there is a problem that the entire recording head (head unit) increases in size. is there. That is, in order to provide a portion to be fixed by the adjustment member and a region for adjusting the adjustment member (a region necessary for the operation of the adjustment member) up to the position, the carriage 6 and the like need to be extended. Increases in size. In particular, as the ink cartridge is increased in size, the recording head is increased in size, which becomes an obstacle to increasing the capacity of the ink cartridge.

  On the other hand, according to the manufacturing method according to the present invention, each step is performed with the third ink cartridge 7c covering the third adjusting member 30c removed, so that the conventional manufacturing method as shown in FIG. Compared to the above, the number of steps for inserting and removing the ink cartridge 7 is small, and the entire manufacturing process can be shortened. In addition, after the alignment is adjusted, there is no step of inserting and removing the ink cartridge 7 before the recording head 8 is permanently fixed to the carriage 6 by the fastening member 18, so that the recording head 8 is moved to the carriage after the alignment adjustment is performed. 6 is suppressed from being displaced. Since the adjustment member 30 can be disposed at a position covered by the ink cartridge 7, the recording head 8 (head unit 4) can be reduced in size, and the ink cartridge can be increased in size (increased capacity). It becomes possible to cope with.

  FIG. 13 is a plan view for explaining the state of the head unit 4 during alignment adjustment in the second embodiment of the present invention (with the cover 17 removed). In the first embodiment, the caps 14 in the capping mechanism 13 are individually provided for each ejection unit 23, whereas in the second embodiment, the caps 14 are all nozzle rows 49a to 49h of the recording head 8. The second embodiment is different from the first embodiment in that the cap is a common one. In the present embodiment, if suction is performed simultaneously from all the nozzle rows 49a to 49h without mounting the third ink cartridge 7c, the ink flow path corresponding to the third ink cartridge 7c is in communication with the atmosphere. There is a problem that the negative pressure does not sufficiently act on the target ink flow path and the filling efficiency is deteriorated. For this reason, during the filling process or the like in the present embodiment, the dummy cartridge 51 (distribution restriction) is attached to the third ink introduction needle 24c (a kind of connection portion in the present invention) at the position where the third ink cartridge 7c is mounted. A kind of member is mounted. The dummy cartridge 51 is a member that regulates the inflow of air from the introduction hole 26 of the ink introduction needle 24 to the ink flow path during suction (adjusts the amount of fluid inflow) by being attached to the ink introduction needle 24. Yes, for example, a flow control valve is provided. The dummy cartridge 51 has a shape that can be mounted at a position where the third ink cartridge 7c is to be mounted, and is designed to be at least smaller in the depth direction (sub-scanning direction) than the ink cartridge 7, so that the carriage 6 The third adjustment member 30c can be exposed in the mounted state. In this way, by mounting the dummy cartridge 51 on the third ink introduction needle 24c at the position where the third ink cartridge 7c is mounted when ink is charged, the ink channel to be filled with ink is sucked. The negative pressure acts more effectively, and the ink filling operation can be performed more efficiently and smoothly.

  Note that the shape and dimensions of the dummy cartridge 51 are not limited to those illustrated, and in essence, air can be restricted from flowing into the ink flow path from the introduction hole 26 of the ink introduction needle 24 during ink filling. In addition, any member can be used as long as it can expose the third adjustment member 30c in a state of being mounted on the carriage 6. In addition, the dummy cartridge 51 is not necessarily used. For example, the ink channel corresponding to the third ink cartridge 7c is filled with the third ink cartridge 7c and the third ink is filled after the filling. It is also possible to remove the cartridge 7c and perform the subsequent steps.

  Further, in each of the above embodiments, the configuration in which the cyan ink of the fourth ink cartridge 7d mounted on the carriage 6 is used as the ink for forming the test pattern is illustrated, but the present invention is not limited to this. For example, the ink stored in the ink cartridge 7 that is removed from the carriage 6 at the time of alignment adjustment can be used for forming the inspection pattern. That is, before removing the ink cartridge 7, the ink flow path corresponding to the ink cartridge 7 is filled with ink, and the ink cartridge 7 is removed after filling. When the test pattern is formed, the ink remaining in the ink flow path is ejected from the nozzles 34 of the nozzle row 49 corresponding to the ink flow path to form the test pattern. At this time, if the ink is ejected as it is, air may flow into the ink flow path from the ink introduction needle 24 side, which may cause a problem in ejecting the ink. On the other hand, when the entrance of the introduction hole 26 of the ink introduction needle 24 is closed so that air does not flow into the ink flow path, ink is ejected from the nozzle 34 by driving the ejection unit 23 (piezoelectric element 39). Along with this, the negative pressure in the ink flow path increases, and in this case, there is a possibility that the ink cannot be ejected normally. In this regard, the above-described problem is suppressed by mounting the dummy cartridge 51 at the mounting position of the removed ink cartridge 7. That is, since the dummy cartridge 51 is mounted, the inflow amount is regulated while allowing the inflow of air into the ink flow path, so that the ink supply pressure to the pressure chamber 46 is adjusted to a desired state. Thereby, the said malfunction can be reduced. Also in this configuration, it is desirable to use ink (ink with lower luminance) that is advantageous for visually checking the inspection pattern as the ink used for forming the inspection pattern.

  In each of the embodiments described above, the alignment adjustment between the ink introduction member 21 (flow path member) and the carriage 6 (container holding member) is exemplified as the adjustment related to the ejection of the ejection unit 23 (ejection mechanism), but is not limited thereto. For example, the present invention can be applied to adjustment of an optical sensor or the like provided on the container holding member as long as the adjustment is performed based on the injection result of the injection mechanism. This sensor includes a sensor for recognizing the liquid (dot) that has landed on the liquid landing target ejected by the ejection mechanism, a sensor for measuring the distance from the nozzle to the liquid landing target, or a liquid landing target Examples include a sensor for recognizing the end. Then, based on the injection result of the injection mechanism, alignment adjustment by an adjustment member is performed to arrange the sensor at a more desirable position (a position where the inspection pattern as the injection result can be recognized more clearly) as initialization, or the sensor It is also possible to adopt a configuration in which the focus is adjusted without changing the arrangement. These adjustments are also a kind of adjustment of the liquid ejecting apparatus.

  Further, for example, the present invention can be applied to a configuration including a mechanism for adjusting the supply pressure of the liquid to the ejection mechanism. For example, by changing the cross-sectional area of the flow path according to the amount of rotation of an adjusting member such as a screw based on the result of the injection by the injection mechanism (the size of the dot, the landing position, etc.), The present invention can also be applied to a configuration in which the ejection characteristics of the liquid ejected from the nozzles of the ejection mechanism are adjusted. Furthermore, the present invention can also be applied to a configuration including an adjustment member that adjusts the distance (also referred to as a so-called platen gap or paper gap) from the nozzle of the ejection mechanism to a liquid landing target. For example, if the amount of unnecessary droplets (satellite droplets) generated as a result of the ejection of the liquid is relatively large as a result of ejection by the ejection mechanism, the distance is set smaller by the adjustment member, and the print quality is more important If the amount of satellite droplets is relatively small, the above-mentioned distance is set to be larger by the adjusting member, and the reduction of the amount of media (landing target) to the ejection mechanism and the amount of dust attached is more important. Can be adjusted as follows. These adjustments are also a kind of adjustment of the liquid ejecting apparatus. Note that the inspection pattern is not necessarily required for adjustment based on these injection results, and the necessity of adjustment and the degree of adjustment may be specified by a sensor or the like.

  In each of the above embodiments, the printer 1 is exemplified as the liquid ejecting apparatus. For example, in a broader sense, the head unit 4 is also a kind of liquid ejecting apparatus. The present invention can also be applied to other liquid ejecting apparatuses that eject liquid from nozzles. For example, a color material ejecting head used for manufacturing a color filter such as a liquid crystal display, an electrode material ejecting head used for forming an electrode such as an organic EL (Electro Luminescence) display, FED (surface emitting display), a biochip (biochemical element) The present invention can also be applied to bioorganic matter ejecting heads and the like used in the production of In a color material ejecting head for a display manufacturing apparatus, a solution of each color material of R (Red), G (Green), and B (Blue) is ejected as a kind of liquid. Further, an electrode material ejecting head for an electrode forming apparatus ejects a liquid electrode material as a kind of liquid, and a bioorganic matter ejecting head for a chip manufacturing apparatus ejects a bioorganic solution as a kind of liquid.

  1 ... Printer, 2 ... Frame, 3 ... Platen, 4 ... Head unit, 5 ... Guide rod, 6 ... Carriage, 7 ... Ink cartridge, 8 ... Recording Head, 11 ... Wiping mechanism, 12 ... Wiper, 13 ... Capping mechanism, 14 ... Cap, 17 ... Cover, 18 ... Fastening member, 19 ... Opening, 20 .. Adjustment hole, 21 ... Ink introduction member, 22 ... Holder, 23 ... Ejection unit, 24 ... Ink introduction needle, 25 ... Filter, 26 ... Introduction hole, 27 ... Introducing flow path, 28 ... supply flow path, 29 ... flow path connecting part, 30 ... adjusting member, 31 ... accommodating empty part, 32 ... fixing plate, 33 ... opening part, 34 ... Nozzle, 35 ... Nozzle plate, 36 ... Communication substrate, 37 ... Pressure chamber forming substrate, 38 ... Vibration plate, 39 ... Piezoelectric element, 40 ... Protective substrate, 41 ... Unit case, 42 ... Inlet, 43 ... Common liquid chamber, 4 ... Case flow path, 45 ... Storage space, 46 ... Pressure chamber, 47 ... Individual communication port, 48 ... Recess, 49 ... Nozzle array, 50 ... Flexible substrate, 51 ... Dummy cartridge

Claims (19)

A liquid ejector comprising: a container holding member to which the first liquid container and the second liquid container are detachably mounted; an ejection mechanism for ejecting the liquid supplied from each liquid container from a nozzle; and an adjustment member. A device manufacturing method comprising:
The adjustment member is disposed at a position that is covered with the first liquid container and not covered with the second liquid container,
An ejection step of ejecting liquid by the ejection mechanism in a state where the first liquid container is not attached and the second liquid container is attached;
An adjustment step of adjusting the liquid ejection device by the adjustment member based on the ejection result in the ejection step;
A method of manufacturing a liquid ejecting apparatus comprising:   The method of manufacturing a liquid ejecting apparatus according to claim 1, wherein the ejecting mechanism ejects the liquid supplied from the second liquid container in the ejecting step.   3. The method of manufacturing a liquid ejecting apparatus according to claim 2, wherein the luminance of the liquid in the first liquid container is higher than the luminance of the liquid in the second liquid container. The liquid ejecting apparatus includes a fastening member provided at a position not covered by the first liquid container and the second liquid container,
The method of manufacturing a liquid ejecting apparatus according to claim 1, wherein the adjusting step is performed by the fastening member and the adjusting member. The liquid ejecting apparatus includes a flow path member having a flow path for supplying liquid from the first liquid container and the second liquid container to the ejection mechanism,
The ejection mechanism has a plurality of nozzle groups composed of nozzles that eject liquid from the second liquid container,
5. The method of manufacturing a liquid ejecting apparatus according to claim 1, wherein, in the adjusting step, alignment of the flow path member with respect to the container holding member is adjusted.   6. The nozzle groups to which the liquid from the second liquid container is ejected sandwich the nozzle groups to which the nozzles to which the liquid from the first liquid container is ejected belong to each other. A manufacturing method of the liquid ejecting apparatus according to claim. The container holding member is a carriage for reciprocating the flow path member;
The method for manufacturing a liquid ejecting apparatus according to claim 5, wherein the carriage and the flow path member are fixed in the adjustment step.   The method of manufacturing a liquid ejecting apparatus according to claim 7, wherein, in the adjusting step, a relative position between the carriage and the nozzle of the ejecting mechanism is adjusted.   Before the jetting step, the second liquid container is mounted on the container holding member, and the gas flow to the jetting mechanism is connected to the connection portion of the container holding member with the first liquid container. With the flow regulating member to be regulated mounted, the second liquid container is simultaneously sucked from the nozzle corresponding to each of the first liquid container and the second liquid container into the liquid flow path of the ejection mechanism. The method for manufacturing a liquid ejecting apparatus according to claim 1, further comprising a filling step of filling the liquid from the liquid. A container holding member to which the first liquid container and the second liquid container are detachably mounted;
An ejection mechanism for ejecting the liquid supplied from each liquid container from a nozzle;
An adjustment member;
With
The liquid ejecting apparatus according to claim 1, wherein the adjustment member is disposed at a position that is covered by the first liquid container but is not covered by the second liquid container.   In the case where the relative position between the container holding member and the fixed member fixed to the container holding member is adjusted by the adjustment member based on the ejection result when the liquid is ejected by the ejection mechanism, the container The ejection mechanism ejects the liquid from the second liquid container in a state where the first liquid container is not attached to the holding member and the second liquid container is attached to the container holding member. The liquid ejecting apparatus according to claim 10, wherein the liquid ejecting apparatus is configured. The container holding member has a cover that covers at least a part of the first liquid container and the second liquid container,
The adjustment member is configured to be rotatable around a rotation axis,
The liquid ejecting apparatus according to claim 10, wherein the cover has an opening on an extension line in the rotation axis direction of an operation position for rotating the adjustment member. The container holding member is a carriage for reciprocating the flow path member in a first direction;
The fixed member is a flow path member having a flow path for supplying liquid from the first liquid container and the second liquid container to the ejection mechanism;
A fastening member for fixing the carriage and the flow path member;
The adjustment member is used to adjust the alignment between the carriage and the flow path member,
The liquid ejecting apparatus according to claim 10, wherein the fastening member is provided at a position not covered by the first liquid container and the second liquid container. .   The liquid ejecting apparatus according to claim 13, wherein the number of the adjustment members is smaller than the number of the fastening members.   15. The adjusting member and the fastening member are provided in a total of three or more, and are arranged in a non-linear manner in which three or more are not aligned on the same straight line. Liquid ejector. A flow path member having a flow path for supplying liquid from the first liquid container and the second liquid container to the ejection mechanism;
The flow path member includes an upstream member to which liquid is supplied from the first liquid container and the second liquid container, and a downstream member to which liquid is supplied from the upstream member,
The adjustment member and the fastening member are provided on the upstream member side to fix the upstream member and the carriage,
The upstream member is longer than the downstream member in the first direction, and the fastening member is disposed at a position away from the downstream member. The liquid ejecting apparatus according to any one of the above.   The said fastening member is located in the said downstream member side rather than the center of the said protrusion range among the protrusion ranges of the said upstream member which remove | deviated from the said downstream member in the said 1st direction. Liquid ejector. The ejection mechanism has a plurality of nozzle groups composed of nozzles that eject liquid from the second liquid container,
11. Each nozzle group to which liquid from the second liquid container is ejected sandwiches a nozzle group to which a nozzle to which liquid from the first liquid container is ejected belongs. The liquid ejecting apparatus according to claim 17.   19. The liquid ejecting apparatus according to claim 10, wherein a luminance of the liquid in the first liquid container is higher than a luminance of the liquid in the second liquid container.

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